Set of key buttons for a telephone handset



FIG. 1 is a front perspective view of a set of key buttons for a telephone handset of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line showing of the remainder of the telephone handset is directed to environment and is for illustrative purposes only; the broken lines form no part of the claimed design. 

We claim the ornamental design for a set of key buttons for a telephone handset, as shown and described. 